摘要
为了进一步提高穿层钻孔封孔质量和瓦斯抽采效果,分析了现有穿层封孔技术的不足,阐述了返渣封孔新技术的工艺原理和参数设计,以及其封孔深度和抽采负压的合理选择,并在平煤八矿己_(15)-14140底抽巷与中抽巷依次开展了3个设计方案的现场返渣封孔试验。同时运用颗粒流软件PFC^(2D)优化验证钻孔返渣技术。结果表明,经过返渣封孔工艺参数的多次优化改进,得出了具有突出工作效率和抽采效果的封孔设计,为矿井高效治理瓦斯奠定了技术基础。
In order to further improve the hole sealing quality in through beds holes and the effect of gas drainage, we discussed the deficiency of existing hole sealing technologies in through beds holes, and described the technical principle and parameters design of the hole sealing technology with recycling residue, as well as the reasonable selection of the depth of borehole sealing and suction pression of drainage system. In addition, three schemes on test of the drillhole sealing technology with recycling residue were successively designed and implemented in Ⅵ15-14140 bed plate tunnel and middle plate tunnel of Pingmei No.8 mine. The results show that, by the optimization and improvement of technical parameters in the hole sealing with recycling residue, scheme Ⅲ has a better performance in work efficiency and effect of gas drainage and provides reference value and technical base for gas management.
作者
肖珷
代志旭
吕有厂
高明忠
XIAO Wu;DAI Zhixu;LYU Youchang;GAO Mingzhong(Pingdingshan Tian＇an Coal Co.,Ltd.,Pingdingshan 467000,China;1nstitute of Energy ＆ Chemical Industry,China Pingmei Shenma Group,PingdingShan 467000,China;Sichuan University,Chengdu 610065,China)
出处
《煤矿安全》
CAS
北大核心
2018年第7期39-42,共4页
Safety in Coal Mines
关键词
瓦斯抽采
封孔技术
返渣封孔
参数优化
数值模拟
gas drainage
hole sealing technology
hole sealing with recycling residue
parameter optimization
numerical simulation
